ICS L86: Mag Incompatibilty?

[Seraphim2150]

I'm buying an ICS L86 at the end of the month (once the paycheck comes in) and I'm looking at mags. Its being sold with two of the ICS high caps but I'm interested in getting more. Problem is I've heard from several people that it has a few fits with certain M4 mags not working.

So my question is which M4 mags do people know defenatly don't work with the ICS L86? I'm especially interested in knowing about the Lonex flash mags as they seem pretty useful and much better than winding.